+ If you haven't, complete the
Pool Chart Entry Form
(if you have, tell me. Be sure to include the EXACT filter you have -- cartridge or sand, and the size)

+ filter 24/7 -- brown iron will filter out, though the time depends on your pump and filter. (MAYBE, SEE BELOW)

+ with that much iron, and a 15' pool, it might be best to drain, get the chemicals you need, and THEN refill.

+ Here's the polyquat info page . . .

+ Your bucket tests tells us you have a LOT of iron in your water. We'll need to work out a plan for you, since this will be an ongoing issue.

+ Here's a possibility . . . IF you think you may want to drain and start over:
=> remove your cartridge (if you have a cartridge filter)
=> add another dose of polyquat, and run your pump for 2 hours to let it mix.
=> turn your pump off for 24 hours.
=> see if the iron settles to the bottom in a layer your could vacuum out.

If it does, that may be the best way to handle the bulk of the iron. (By the way; it's not stupid to have problems when there is a lot of iron in the water. Everyone does, till they work out a way to deal with it successfully!)